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JP4446360B2 - Multiple extrusion head for producing molding materials especially for tire production - Google Patents
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JP4446360B2 - Multiple extrusion head for producing molding materials especially for tire production - Google Patents

Multiple extrusion head for producing molding materials especially for tire production Download PDF

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Publication number
JP4446360B2
JP4446360B2 JP36552898A JP36552898A JP4446360B2 JP 4446360 B2 JP4446360 B2 JP 4446360B2 JP 36552898 A JP36552898 A JP 36552898A JP 36552898 A JP36552898 A JP 36552898A JP 4446360 B2 JP4446360 B2 JP 4446360B2
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Japan
Prior art keywords
head
flange
multiple extrusion
closed
extrusion head
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Expired - Fee Related
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JP36552898A
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Japanese (ja)
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JPH11240058A5 (en
JPH11240058A (en
Inventor
ユルゲン・ベルトラーム
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クラウスマッファイ・ベルシュトルフ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/12—Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/256—Exchangeable extruder parts
    • B29C48/2562—Mounting or handling of the die
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/305—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets
    • B29C48/307—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets specially adapted for bringing together components, e.g. melts within the die
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/49—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using two or more extruders to feed one die or nozzle
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49815—Disassembling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Description

【０００１】
本発明は、固定配置されたヘッドフランジを備え、このヘッドフランジに複数の押出機が接続され、更に、流路、カセット及び成形具を有する閉じたヘッドを備え、該ヘッドがヘッドフランジに対して締付け固定可能にかつヘッドフランジから離れるように旋回可能に配置されている、タイヤ製造用の成形材を製造する多重押出ヘッドに関する。
【０００２】
【従来の技術】
多重押出ヘッドは、流路インサートへの良好なアクセス（取扱操作性）を確保する為に、通常は分割して形成されている。良好なアクセスは、たいていしばしば生じる原料の交換の際に流路の洗浄を実施できるようにするために必要である。アクセスは更に、成形材の寸法を変える場合に別構造の流路インサートを使用出来るようにするためにも必要である。この種の押出ヘッドは例えばドイツ連邦共和国特許第３２３８２８４号明細書により知られている。旋回可能な押出ヘッドの場合には基本的に、高い内圧が二つのヘッド部分に作用し、かつこの内圧を高価な鎖錠機構を用いて受け止めなければならないという不都合がある。旋回可能な射出ヘッドの場合、発生する高い圧力を確実に抑制することは原理的に困難である。
【０００３】
ドイツ連邦共和国特許出願公開第３７２９４４７号公報から既に、固定配置されたヘッドフランジを有する押出ヘッドも知られており、その際ヘッドフランジに複数の押出機が接続され、閉じたヘッドがヘッドフランジに対して締付け固定可能にかつ離れるように旋回可能に配置されている。閉じたヘッドは開いた流路を有する。更にヘッド内には、カセットと成形具が裏側から交換可能に配置されている。このヘッドは流路の形を変更できない。即ち、原料案内部を交換により変えることができない。この押出ヘッドの使用範囲は極めて制限されている。
【０００４】
【発明が解決しようとする課題】
本発明は、二つのヘッド部分を鎖錠する必要がなく、それにも拘わらず容易な洗浄と、ヘッド内の流路のいろいろな延長状態に合わせた迅速な装備変更とを可能にする多重押出ヘッドを提供することを目的とする。
【０００５】
【課題を解決するための手段】
この目的は、本発明によれば、閉じたヘッドがヘッドフランジの方に開いた収容部を有し、その収容部内に少なくとも一つのヘッドに向かって開いた流路インサートが取り外し可能に配置されていることによって達成される。この場合、閉じたヘッドが高価な鎖錠装置を必要としないという利点がある。内圧はヘッドによって受け止められる。シール面の範囲においてヘッドをヘッドフランジの方に引っ張る締付け装置だけが必要である。この場合に発生する力は比較的に小さい。総じて、ヘッドの構造は、ヘッドに向かって開いた流路インサートの容易な取り外しと、多重押出ヘッド内の流路の異なる延長状態に合わせた迅速な装備変更とを可能にする。全く驚くべきことに、ヘッドフランジの方に開いた、閉じたヘッドの収容部内に、ヘッドに向かって開いた流路を配置することが可能であることが明らかになった。ヘッドの内壁に対する比較的に長い境界面の範囲でのそれ自体予想される漏れは、精密な製造方法を使用することにより完全に抑制可能である。
【０００６】
本発明の有利な構成によれば、ヘッドフランジの方に開いた、閉じたヘッドの収容部がカセットの方に楔形に先細に形成されている。流路インサートと閉じたヘッドの内壁との間の楔作用に基づいてかつ閉鎖力と圧力の作用を受けて、密閉を促進する有利な押付けが生じる。
【０００７】
本発明の他の有利な構成によれば、閉じたヘッドが垂直な回転軸線を中心としてヘッドフランジから離れるように旋回可能である。この様な構造は、多重押出ヘッドの操作を著しく容易にする。
【０００８】
【発明の実施の形態】
図には実施の形態が示されており、次にこの実施の形態を詳細に説明する。
【０００９】
図において多重押出ヘッドは符号１を付されている。多重押出ヘッド１は閉じたヘッドを有し、ヘッドは締付け装置によりヘッドフランジ３に対して締付固定可能である。ヘッドフランジ３に２つの押出機５がフランジ止めされており、図面には示されていない押出機５のスクリューがヘッドフランジ３の通路６に接続されている。
【００１０】
閉じたヘッド２はヘッドフランジ３の方に開いた収容部７を有する。収容部７は原料の流動方向に楔形に先細になっている。収容部７内には、ヘッドに向かって開いた流路インサート８が取り外し可能に配置されている。流路インサート８は２つの流路９を有する。流路９は収容部７の壁の方向に開いている。収容部７に接する流路インサート８の壁は閉じたヘッド２の収容部７の壁に密に接触している。
【００１１】
閉じたヘッド２には、原料の流動方向にみて流路インサート８の前方にカセット１０が配置されている。カセット１０の前方に成形具１１が固定されている。
【００１２】
閉じたヘッド２は、図２から明らかなように、垂直な回転軸線１２を中心としてヘッドフランジ３から離れるように旋回可能である。そのときは、洗浄又は交換の為に流路インサート８を収容部７から取り外すことができる。
【００１３】
当然のことながら、ヘッドフランジ３には３個又は４個の押出機５をフランジ止めすることも出来る。閉じたヘッド体２の収容部７内には複数の流路インサート８を配置することも出来る。いかなる場合でも、ヘッド２で発生する高い内圧から生じる力の大部分がヘッド２の壁によって受け止められるという利点が生じる。締付け装置４は比較的簡単に設計可能である。なぜなら、締付け装置４はヘッド２とヘッドフランジ３との間の密閉範囲に発生する極めて僅かな力だけを受け止めればよいからである。同時に、流路インサート８への極めて良好かつ迅速なアクセスが生じる。
【図面の簡単な説明】
【図１】 多重押出ヘッドの縦断面を示す。
【図２】 開かれた多重押出ヘッドを概略的に示す。
【図３】 図１の押出ヘッドのＡ−Ｂ線に沿った断面を示す。
【符号の説明】
１ 多重押出ヘッド
２ ヘッド
３ ヘッドフランジ
４ 締付け装置
５ 押出機
６ 通路
７ 収容部
８ 流路インサート
９ 流路
１０ カセット
１１ 成形具
１２ 回転軸線[0001]
The present invention includes a fixedly arranged head flange, a plurality of extruders connected to the head flange, and a closed head having a flow path, a cassette and a molding tool, the head being connected to the head flange. The present invention relates to a multiple extrusion head for manufacturing a molding material for manufacturing a tire , which is arranged so as to be clamped and pivotable away from a head flange.
[0002]
[Prior art]
The multiple extrusion head is usually divided and formed in order to ensure good access (handling operability) to the flow path insert. Good access is necessary to allow flow path cleaning to be performed during the raw material change that often occurs. Access is also necessary to allow the use of alternate channel inserts when changing the dimensions of the molding. An extrusion head of this kind is known, for example, from DE 3238284. In the case of a swivelable extrusion head, there is basically the disadvantage that a high internal pressure acts on the two head parts and this internal pressure must be received using an expensive locking mechanism. In the case of a swivelable injection head, it is theoretically difficult to reliably suppress the high pressure generated.
[0003]
Also known from German Offenlegungsschrift 3729447 is an extrusion head having a fixedly arranged head flange, in which a plurality of extruders are connected to the head flange and the closed head is connected to the head flange. It is arranged so that it can be fastened and pivoted away from it. A closed head has an open flow path. Further, in the head, a cassette and a forming tool are disposed so as to be exchangeable from the back side. This head cannot change the shape of the flow path. That is, the raw material guide cannot be changed by replacement. The range of use of this extrusion head is extremely limited.
[0004]
[Problems to be solved by the invention]
The present invention eliminates the need to lock the two head parts, nevertheless a multiple extrusion head that allows easy cleaning and quick equipment change for various extended conditions of the flow path in the head. The purpose is to provide.
[0005]
[Means for Solving the Problems]
This object is achieved according to the present invention, closed head has a housing part open towards the head flange, the channel insert open towards the at least one head in the receptacle is arranged removably To be achieved. This has the advantage that the closed head does not require an expensive locking device. The internal pressure is received by the head. Only a clamping device is required which pulls the head towards the head flange in the area of the sealing surface. The force generated in this case is relatively small. Overall, the construction of the head allows for easy removal of the flow channel insert that opens toward the head and quick equipment change for different extended states of the flow channel in the multiple extrusion head. Quite surprisingly, it has become clear that it is possible to arrange a flow path open towards the head in a closed head receptacle which opens towards the head flange. The expected leakage in the range of the relatively long interface to the inner wall of the head can be completely suppressed by using a precise manufacturing method.
[0006]
According to an advantageous configuration of the invention, a closed head receiving part which opens towards the head flange is tapered in a wedge shape towards the cassette. Based on the wedge action between the flow path insert and the inner wall of the closed head and under the action of closing force and pressure, an advantageous pressing which promotes sealing occurs.
[0007]
According to another advantageous configuration of the invention, the closed head is pivotable away from the head flange about a vertical axis of rotation. Such a structure significantly facilitates the operation of the multiple extrusion head.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment is shown in the figure, and this embodiment will now be described in detail.
[0009]
In the figure, the multiple extrusion head is designated 1. The multiple extrusion head 1 has a closed head , and the head can be clamped and fixed to the head flange 3 by a clamping device. Two extruders 5 are flanged to the head flange 3, and a screw of the extruder 5 not shown in the drawing is connected to a passage 6 of the head flange 3.
[0010]
The closed head 2 has a receiving part 7 which opens towards the head flange 3. The accommodating part 7 is tapered in a wedge shape in the flow direction of the raw material. In the accommodating part 7, the flow path insert 8 opened toward the head is detachably disposed. The flow path insert 8 has two flow paths 9. The flow path 9 is open in the direction of the wall of the accommodating portion 7. The wall of the flow path insert 8 in contact with the housing portion 7 is in close contact with the wall of the housing portion 7 of the closed head 2.
[0011]
In the closed head 2, a cassette 10 is disposed in front of the flow path insert 8 in the flow direction of the raw material. A forming tool 11 is fixed in front of the cassette 10.
[0012]
As is apparent from FIG. 2, the closed head 2 can be pivoted away from the head flange 3 about the vertical rotation axis 12. At that time, the flow path insert 8 can be removed from the accommodating portion 7 for cleaning or replacement.
[0013]
As a matter of course, three or four extruders 5 can be flanged to the head flange 3. A plurality of flow path inserts 8 can be arranged in the accommodating portion 7 of the closed head body 2. In any case, the advantage that the majority of the forces resulting from the high internal pressure generated in the head 2 is received by the wall of the head 2 is caused. The clamping device 4 can be designed relatively easily. This is because the tightening device 4 needs to receive only a very small force generated in the sealed range between the head 2 and the head flange 3. At the same time, very good and quick access to the flow path insert 8 occurs.
[Brief description of the drawings]
FIG. 1 shows a longitudinal section of a multiple extrusion head.
FIG. 2 schematically shows an opened multiple extrusion head.
3 shows a section along the line AB of the extrusion head of FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Multiple extrusion head 2 Head 3 Head flange 4 Tightening device 5 Extruder 6 Passage 7 Storage part 8 Flow path insert 9 Flow path 10 Cassette 11 Molding tool 12 Rotation axis

Claims (3)

固定配置されたヘッドフランジ（３）を備え、このヘッドフランジに複数の押出機（５）が接続され、更に、流路（９）、カセット（１０）及び成形具（１１）を有する閉じたヘッド（２）を備え、該ヘッド（２）がヘッドフランジ（３）に対して締付け固定可能にかつヘッドフランジ（３）から離れるように旋回可能に配置されている、タイヤ製造用の成形材を製造する多重押出ヘッドにおいて、閉じたヘッド（２）がヘッドフランジ（３）の方に開いた収容部（７）を有し、その収容部（７）内に少なくとも一つのヘッドに向かって開いた流路インサート（８）が取り外し可能に配置されていることを特徴とする成形材を製造する多重押出ヘッド（１）。A closed head having a fixedly arranged head flange (3), a plurality of extruders (5) connected to the head flange, and further comprising a flow path (9), a cassette (10) and a molding tool (11) (2) is manufactured , and the head (2) is disposed so as to be clamped and fixed to the head flange (3) and to be able to turn away from the head flange (3). In this multiple extrusion head, the closed head (2) has a receiving part (7) which opens towards the head flange (3), and the flow which opens towards at least one head in the receiving part (7). A multiple extrusion head (1) for producing a molding, characterized in that the road insert (8) is detachably arranged. ヘッドフランジ（３）の方向に開いた、閉じたヘッド（２）の収容部（７）がカセット（１０）の方向に楔形に先細に形成されていることを特徴とする請求項１に記載の多重押出ヘッド（１）。2. The housing (7) of the closed head (2), which opens in the direction of the head flange (3), is tapered in a wedge shape in the direction of the cassette (10). Multiple extrusion head (1). 閉じたヘッド（２）が回転軸線（１２）を中心としてヘッドフランジ（３）から離れるように旋回可能であることを特徴とする請求項１に記載の多重押出ヘッド（１）。  The multiple extrusion head (1) according to claim 1, characterized in that the closed head (2) is pivotable away from the head flange (3) about the axis of rotation (12).
JP36552898A 1997-12-23 1998-12-22 Multiple extrusion head for producing molding materials especially for tire production Expired - Fee Related JP4446360B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19757261A DE19757261C1 (en) 1997-12-23 1997-12-23 Multi-strand extrusion head for profiles used in tyre manufacture
DE19757261:8 1997-12-23

Publications (3)

Publication Number Publication Date
JPH11240058A JPH11240058A (en) 1999-09-07
JPH11240058A5 JPH11240058A5 (en) 2005-11-04
JP4446360B2 true JP4446360B2 (en) 2010-04-07

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JP36552898A Expired - Fee Related JP4446360B2 (en) 1997-12-23 1998-12-22 Multiple extrusion head for producing molding materials especially for tire production

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US (1) US6213748B1 (en)
JP (1) JP4446360B2 (en)
DE (1) DE19757261C1 (en)

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DE102009048980A1 (en) * 2009-10-09 2011-04-14 Troester Gmbh & Co. Kg Spray head and equipped with such a spray head extrusion device
CN102039657B (en) * 2009-10-26 2013-03-20 青岛科技大学 Extrusion moulding apparatus for large-scale macromolecular product and process thereof
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DE19757261C1 (en) 1998-11-19
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